Speed-governor.



' P. J. WOOD.

7 SPEED GOVERNOR. APPLIOAIION FILED SEPT. 10, 1906.

Patented July 2, 1912.

2 8HEETSSHEET l.

winesses P. J. WOOD. SPEED GOVERNOR. APPLIOATION FILED SEPT. 10, 1906.

1,031,670. Patented July 2, 1912.

2 SHEETS-SHEET 2.

COLUMBIA PLANUGRAPH cu.. WASHINGTON, D, cv

FRANZ J. WOOD, OF DES MOINES, IOWA.

SPEED-GOVERNOR.

travel of the other, and further to provide means whereby a positive driving connection may be made between the chain and shaft.

My invention consists in certain details in the construction, arrangement and combination of the various parts of the device, whereby the objects contemplated are attained, as hereinafter more fully set forth,

pointed out in my claims and illustrated in the accompanying drawings, in which- Figure 1 shows a side elevation of a device embodying my invent-ion. Fig. 2 shows a face view of one of the disks to be engaged by the chain. view of the weighted levers and the frame for supporting them. Fig. 4 shows the opposite side of the disk illustrated in Fig. 2 with the sprocket wheel in position thereto and a sprocket chain passing around the sprocket wheel and out of contact therewith. Fig. 5 shows a vertical, central, sectional view of the governing device embodying my invention, the upper sprocket wheel and connected parts being omitted. Fig. 6 shows an enlarged detail, sectional view on the line 66 of Fig. 5illustrating the rollers and tapered arm in their relative positions, and Fig. 7 shows an enlarged, central, sectional View of a modified form of governor in which both of the chain engaging disks are provided with governing devices for moving the disks in unison toward and from each other.

Referring to the accompanying drawings, I have used the reference numeral 10 to indicate a rotatable shaft. A stationary disk 11 is fixed to this shaft by the set screw 12 and has one face beveled from its axis to its periphery away from the other disk.

Specification of Letters Patent.

Fig. 3 shows a face,

Patented July 2,1912.

Application filed September 10, 1906. Serial No. 333,944.

Fixed to the shaft 10 adjacent to the center of the disk 11 is a small sprocket rim 13 held to the shaft by the pin 14. Adjacent to the said sprocket rim is a disk 15 slidingly and non-rotatably mounted on the shaft and having its face, that is adjacent to the sprocket rim, beveled from its center toward its periphery, the adjacent faces of the disks 11 and 15 being spaced apart and the space between them being narrowest at the center. Fixed to the shaft 10 by means of the pin 16 is a frame 17 adjacent to the outer face of the disk 13. This frame is connected with the disk 13 by means of a number of guide pins 18 extending through the disk and frame and so arranged that the disk may freely move toward or from the frame, but may not rotate relative thereto.

I have provided means for yieldingly holding the disk toward the frame as follows: The numeral 19 indicates bolts fixed to the disk and slidingly mounted in the frame. On said bolts are the extensible coil springs 20, one end of each spring bearing against the frame and the other against an adjustable nut on the bolt 19, whereby the tension of the spring may be regulated. The frame 17 also supports three weighted levers, each of which comprises a hub 22 mounted upon one of the pins 18 and formed with a wedge'shaped extension 23 and with an arm 2 1 on which a weight 25 is adjust-ably secured by the set screw 26. Adjacent to the wedge-shaped extensions 23 is an anti-friction roller 27 mounted in the frame 17 and a similar roller 28 mounted in the disk 15. These parts are so constructed and arranged that when the shaft 10 is at rest, the springs 20 will force the disk 15 and frame 17 together, thus causing: the rollers 27 and 28 to engage the wedge-shaped extension 23 and thereby hold the weighted levers 2 1 to their inner limit of movement. Then assuming that the shaft- 10 is rotated, the weighted levers will move outwardly by centrifugal force and cause the disk 15 to move away from the frame 17 on account of the wedge-shaped extension 23 acting upon the roller 28 to force the disk 15 away from the frame. Rotatably mounted at some distance from the shaft 10 is a second shaft 29 upon which is fixed a gear-wheel 30. On the same shaft is 36. A sprocket chain 37 is passed aroundthe sprocket wheel 36 and also around the sprocket wheel 13 and between the disks 11 and 15. The links of the sprocket chain are provided with lateral extensions 38 at their sides to engage the faces of the disks 11 and 15 when said disks are moved toward each other, so that they may engage the said extension.

In practical use and assuming that motion is to be transmitted from the shaft 10 to shaft 34, it is obvious that as the shaft 10 starts to move, the shaft 34 will be positively driven by the sprocket wheels 13 and 36 and the chain 37 This action is just as positive as though the disks 11 and 15 were omitted. Assuming further that the speed of rotation of the shaft 10 is increased materially, then the centrifugal action of the weighted levers will move the disk 15 toward the disk 11, thus wedging the chain between the disks and forcing the chain out of engagement with the sprocket wheel 13. The portion of the chain that travels around the shaft 10 will move outwardly from the shaft as the speed of rotation of the shaft increases and will move inwardly toward the shaft as the speed decreases'until the links thereof again engage the sprocket wheel 13. When the links of the chain engage the disks 11 and 15 at the maximum distance from their centers, then the shaft 34 will be driven at its maximum speed relative to the shaft 10 and when the sprocket chain engages the sprocket wheel 13, the shaft 34 will be driven at its mini-- Assuming that it is desirable to drive the shaft 34 at its minimum speed when the shaft 10 is rotating, at its maximum speed, then the lever 31 is manipulated to take up the slack in the chain and thus positively force the links of the chain to wedge themselves between the disks until the links of the chain engage the sprocket wheel 13. This will prevent the automatic action of the movable disk and produce a positive drive of the sprocket chain.

In the modified form of my invention, illustrated in Fig. 7, I have made both of the chain engaging disks alike and provided each with independent governing devices for moving the disks toward and from each controlling this disk 11 are identical'withthe ones just before described and hence a detail description of said governing device is unnecessary. The advantage to be gained by having both disks movable relative to each other and relative to the sprocket wheel 13 is that as the chain is moved by the friction disks to and from position in engagement with the sprocket wheel, the sprocket chain will at all times be in position accurately centered over the sprocket wheel, while with the form of invention shown in Fig. 5 and assuming that the chain is at its outer limit of movement away from the sprocket wheel, then it would not be centered directly over the sprocket wheel, but will be at the side thereof toward the stationary disk 11. In some instances this lateral movement of the sprocket chain is objectionable but by having both disks moved at the same time and to the same degree, then the sprocket chain at all times remains accurately centered over the sprocket wheel.

It is obvious that if the sprocket wheel 36 is firmly fixed at its limit of movement away from the sprocket wheel 13, then the ward each other, hence, the means for adjusting the sprocket wheel 36 is in fact a means for limiting the movement of the sprocket chain away from the sprocket wheel. If however, the disk 36 is set in such position that there is sufficient slack in the chain to permit the chain to move from the sprocket wheel 13 toward the peripheries of the adjacent disks, and back, then the action of the disks will be automatic and will be controlled by the speed of rotation of the disks as before explained.

Having thus described my invention, what I claim and desire to secure by Letters Patent of the United States, therefor is 1. The combination of a sprocket wheel, a sprocket chain passed around it and chain engaging devices arranged to rotate with the sprocket wheel and capable of forcing the chain outwardly from engagement with the sprocket wheel while maintaining driving engagement with the chain.

2. The combination of a sprocket wheel,

a sprocket chain passed around it and chain engaging devices arranged to rotate with the sprocket wheel and capable of automatically forcing the chain outwardly from engagement with the sprocket wheel while maintaining driving engagement with the chain.

3. The combination of a sprocket wheel, a sprocket chain passed around it and centrifugally actuated chain engaging devices arranged to rotate with the sprocket wheel and capable of forcing the chain outwardly from engagement with the sprocket wheel while maintaining driving engagement with the chain.

4. The combination of a sprocket wheel, a sprocket chain passed around it, chain engaging devices arranged to rotate with the sprocket wheel and capable of forcing the chain outwardly from engagement with the sprocket wheel while maintaining driving engagement with the chain, and a yielding pressure device to act in opposition to the means for forcing the chain outwardly from the sprocket wheel.

5. The combination of a sprocket wheel, a sprocket chain passed around it, chain engaging devices arranged to rotate with the sprocket wheel and capable of automatically forcing the chain outwardly from engagement with the sprocket wheel while maintaining driving engagement with the chain and a yielding pressure device to act in opposition to the means for forcing the chain outwardly from the sprocket wheel.

6. The combination of a sprocket wheel, a sprocket chain passed around it, centrifugally actuated chain engaging devices arranged to rotate with the sprocket wheel and capable of forcing the chain outwardly from engagement with the sprocket wheel while maintaining driving engagement with the chain and a yielding pressure device to act in opposition to the means for forcing the chain outwardly from the sprocket wheel.

7. The combination of a sprocket wheel, a sprocket chain passed around it, chain engaging devices arranged to rotate with the sprocket wheel and capable of forcing the chain outwardly from engagement with the sprocket wheel while maintaining driving engagement with the chain and means for positively forcing the sprocket chain into engagement with the sprocket wheel.

8. The combination of a sprocket wheel, a sprocket chain passed around it, chain engaging devices arranged to rotate with the sprocket wheel and capable of automatically forcing the chain outwardly from engagement with the sprocket wheel while maintaining driving engagement with the chain and means for positively forcing the sprocket chain into engagement with the sprocket wheel.

9. The combination of a sprocket wheel, a sprocket chain passed around it, centrif ugally actuated chain engaging devices arranged to rotate with the sprocket wheel and capable of forcing the chain outwardly from engagement with the sprocket wheel while maintaining driving engagement with the chain and means for positively forcing the sprocket chain into engagement with the sprocket wheel.

10. The combination of a sprocket wheel, a sprocket chain passed around it, chain engaging devices arranged to rotate with the sprocket wheel and capable of forcing the chain outwardly from engagement with the sprocket wheel while maintaining driving engagement with the chain, a yielding pressure device to act in opposition to the means for forcing the chain outwardly from the sprocket wheel and means for positively.

forcing the sprocket chain into engagement with the sprocket wheel.

11. The combination of a sprocket wheel,

a sprocket chain'passed around it, chain engaging devices arranged to rotate with the sprocket wheel and capable of automatically forcing the chain outwardly from engagement with the sprocket wheel while mantaining driving engagement with the chain, a yielding pressure device to act in opposition to the means for forcing the chain outwardly from the sprocket wheel and means for positively forcing the sprocket chain into engagement with the sprocket wheel.

12. The combination of a sprocket wheel, a sproket chain passed around it, centrifugally actuated chain engaging devices arranged to rotate with the sprocket wheel and capable of forcing the chain outwardly fro-m engagement with the sprocket wheel while maintaining driving engagement with the chain, a yielding pressure device to act in opposition to the means for forcing the chain outwardly from the sprocket wheel and means for positively forcing the sprocket chain into engagement with the sprocket wheel.

13. The combination of a sprocket wheel, a sprocket chain passed around it, chain engaging devices arranged to rotate with the sprocket wheel and capable of forcing the chain outwardly from engagement with the sprocket wheel while maintaining driving engagement with the chain and manually operated means for positively forcing the sprocket chain into engagement with the sprocket wheel.

14;. The combination of a sprocket wheel, a sprocket chain passed around it, chain engaging devices arranged to rotate with the sprocket wheel and capable of automatically forcing the chain outwardly from engagement with the sprocket wheel While maintaining driving engagement with the chain and manually operated means for positively forcing the sprocket chain into engagement with the sprocket wheel.

15. The combination of a sprocket wheel, a sprocket chain passed around it, centrifugally actuated chain engaging devices arranged to rotate with the sprocket wheel and capable of forcing the chain outwardly from engagement with the sprocket wheel while maintaining driving engagement with the chain and manually operated means for positively forcing the sprocket chain into engagement with the sprocket wheel.

16. The combination of a sprocket wheel, a sprocket chain passed around it, chain engaging devices arranged to rotate with the sprocket wheel and capable of forcing the chain outwardly from engagement with the sprocket wheel While maintaining driving engagement with the chain, a yielding pressure device to act in opposition to the means for forcing the chain outwardly from the sprocket wheel and manually operated means for positively forcing the sprocket chain into engagement with the sprocket wheel.

17 The combination of a sprocket wheel, a sprocket chain passed around it, chain engaging devices arranged to rotate with the sprocket wheel and capable of automatically forcing the chain outwardly from engagement with the sprocket wheel while maintaining driving engagement with the chain, a yielding pressure device to act in opposition to the means for forcing the chain outwardly from the sprocket wheel and manually operated means for positively forcing the sprocket chain into engagement with the sprocket wheel.

18. The combination of a sprocket wheel, a sprocket chain passed around it, centrifugally actuated chain engaging devices arranged to rotate with the sprocket wheel and capable of forcing the chain outwardly from engagement with the sprocket wheel while maintaining driving engagement with the chain, a yielding pressure device to act in opposition to the means for forcing the chain outwardly from the sprocket wheel and manually operated means for positively forcing the sprocket chain into engagement with the sprocket wheel.

19. The combination of a sprocket wheel, a sprocket chain passed around it, chain engaging devices arranged to rotate with the sprocket wheel and capable of forcing the chain outwardly from engagement with the sprocket wheel while maintaining driving engagement with the chain and means for limiting the movement of the sprocket chain away from the sprocket wheel.

20. The combination of a sprocket wheel, a sprocket chain passed around it, chain engaging devices arranged to rotate. with the sprocket wheel and capable of automatically forcing the chain outwardly from engagement with the sprocket wheel while maintaining driving engagement with the chain and means for limiting the movement of the sprocket chain away from the sprocket wheel.

21. The combination ofa sprocket wheel, a sprocket chain passed around it, centrifugally actuated chain engaging devices arranged to rotate with the sprocket wheel and capable of forcing the chain outwardly from engagement with the sprocket wheel while maintaining driving engagement with the chain and means for limiting the movement of the sprocket chain away from the sprocket wheel.

22. The combination of a sprocketwheel, a sprocket chain passed around it, chain engaging devices arranged to rotate with the sprocket wheel and capable of forcing the chain outwardly from engagement with the sprocket wheel while maintaining driving engagement with the chain, a yielding pressure device to act in opposition to the means for forcing the chain outwardly from the sprocket wheel and means for limiting the movement of the sprocket chain away from the sprocket wheel.

23. The combination of a sprocket wheel, a sprocket chain passed around it, chain engaging devices arranged to rotate with the sprocket wheel and capable of automatically forcing the chain outwardly from engagement with the sprocket wheel while maintaining driving engagement with the chain, a yielding pressure device to act in opposition to the means for forcing the chain outwardly from the sprocket wheel and means for limiting the movement of the sprocket chain away from the sprocket wheel.

24. The combination of a sprocket wheel, a sprocket chain passed around it, centrifugally actuated chain engaging devices arranged to rotate with the sprocket wheel and capable of forcing the chain outwardly from engagement with the sprocket wheel while maintaining driving engagement with the chain, a yielding pressure device to act in opposition to the means for forcing the chain outwardly from the sprocket wheel and means for limiting the movement of the sprocket chain away from the sprocket wheel.

25. The combination of a sprocket wheel, a sprocket chain passed around it, chain engaging devices arranged to rotate with the sprocket wheel and capable of forcing the chain outwardly from engagement with the sprocket wheel while maintaining driving engagement with the chain and adjustable means for limiting the movement of the sprocket chain away from' the sprocket wheel.

26. The combination of a sprocket wheel, a sprocket chain passed around it, chain engaging devices arranged to rotate with the sprocket wheel and capable of automatically forcing the chain outwardly from engagement with he sprocket wheel while maintaining driving engagement with the chain and adjustable means for limiting the movement of the sprocket chain away from the sprocket wheel.

27. The combination of a sprocket wheel, a sprocket chain passed around it, centrifugally actuated chain engaging devices arranged to rotate with the sprocket wheel and capable of forcing the chain outwardly from engagement with the sprocket Wheel while maintaining driving engagement with the chain and adjustable means for limiting the movement of the sprocket chain away from the sprocket wheel.

28. The combination of a sprocket wheel, a sprocket chain passed around it, chain engaging devices arranged to rotate with the sprocket wheel and capable of forcing the chain outwardly from engagement with the sprocket wheel while maintaining driving engagement with the chain, a yielding pressure device to act in opposition to the means for forcing the chain outwardly from the sprocket wheel and adjustable means for limitng the movement of the sprocket chain away from the sprocket wheel.

29. The combination of a sprocket wheel, a sprocket chain passed around it, chain engaging devices arranged to rotate with the sprocket wheel and capable of automatically forcing the chain outwardly from engagement with the chain, a yielding pressure device to act in opposition to the means for forcing the chain outwardly from the sprocket wheel and adjustable means for limiting the movement of the sprocket chain away from the sprocket wheel.

30. The combination of a sprocket wheel, a sprocket chain passed around it, centrifugally actuated chain engaging devices arranged to rotate with the sprocket wheel and capable of forcing the chain outwardly from engagement with the sprocket wheel while maintaining driving engagement with the chain, a yielding pressure device to act in opposition to the means for forcing the chain outwardly from the sprocket wheel and adjustable means for limiting the movement of the sprocket chain away from the sprocket wheel.

31. The combination of a sprocket wheel, a sprocket chain, two disks arranged on opposite sides of the sprocket wheel to rotate in unison with it, the adjacent faces of said disks beveled from their centers outwardly and away from each other and means for moving one toward the other.

32. The combination of a sprocket wheel, a sprocket chain, two disks arranged on opposite sides of the sprocket wheel to rotate in unison with it, the adjacent faces of said disks beveled from their centers outwardly and away from each other and automatic means for moving one toward the other.

33. The combination of a sprocket wheel, a sprocket chain, two disks arranged on opposite sides of the sprocket wheel to rotate in unison with it, the adjacent faces of said disks beveled from their centers outwardly and away from each other and centrifugally actuated means for moving one toward the other.

34. The combination of a sprocket wheel, a sprocket chain, two disks arranged on opposite sides of the sprocket wheel to rotate in unison with it, the adjacent faces of said disks beveled from their centers outwardly and away from each other, means for moving one toward the other and a yielding pressure device normally tending to separate the disks.

35. The combination of a sprocket wheel, a sprocket chain, two disks arranged on opposite sides of the sprocket wheel to rotate in unison with it, the adjacent faces of said disks beveled from their centers outwardly and away from each other, automatic means for moving one toward the other and a yielding pressure device normally tending to separate the disks.

36. The combination of a sprocket wheel, a sprocket chain, two disks arranged on opposite sides of the sprocket wheel to rotate in unison with it, the adjacent faces of said disks beveled from their centers outwardly and away from each other, centrifugally actuated means for moving one toward the other and a yielding pressure clevice normally tending to separate the disks.

37 The combination of a sprocket wheel, a sprocket chain, two disks on opposite sides of the sprocket wheel to rotate with it and having their adjacent faces beveled from their centers outwardly and away from each other, and means for jointly moving the disks toward the sprocket wheel.

38. The combination of a sprocket wheel, a sprocket chain, two disks on opposite sides of the sprocket wheel to rotate with it and having their adjacent faces beveled from their centers outwardly and away from each other and automatic means'for jointly moving the disks toward the sprocket wheel.

39. The combination of a sprocket wheel, a sprocket chain, two disks on opposite sides of the sprocket wheel to rotate with it and having their adjacent faces beveled from their centers outwardly and away from each other and centrifugally actuated means for jointly moving the disks toward the sprocket wheel.

a0. The combination of a sprocket wheel, a sprocket chain, two disks on opposite sides of the sprocket wheel to rotate with it and having their adjacent faces beveled from their centers outwardly and away from each other, means for jointly moving the disks toward the sprocket wheel and yielding pressure devices normally tending to jointly move said disks away from the sprocket wheel.

41. The combination of a sprocket wheel, a sprocket chain, two disks on opposite sides of the sprocket wheel to rotate with it and having their adjacent faces beveled from their centers outwardly and away from each other, automatic means for jointly moving the disks toward the sprocket wheel and yielding pressure devices normally tending to joint-1y move said disks away from the sprocket wheel.

42. The combination of a sprocket wheel, a sprocket chain, two disks on opposite sides of the sprocket wheel to rotate with it and having their adjacent faces beveled from their centers outwardly and away from each other, centrifugally actuated means for jointly moving the disks toward the sprocket wheel and yielding pressure devices normally tending to jointly move said disks away fro-1n the sprocket wheel.

43. The combination of a sprocket wheel, a sprocket chain, two disks on opposite sides of the sprocket wheel to rotate with it and having their adjacent faces beveled from their centers outwardly and away from each other, means for jointly moving the disks toward the sprocket wheel and means for limiting the movement of the sprocket chain outwardly between the disks.

44. The combination of a sprocket wheel, a sprocket chain, two disks on opposite sides of the sprocket wheel to rotate with it and having their adjacent faces beveled from their centers outwardly and away from each other, means for jointly moving the disks toward the sprocket wheel and adjustable means for limiting the movement of the sprocket chain outwardly between the disks.

45. The combination of a sprocket wheel, a sprocket chain, two disks on opposite sides of the sprocket wheel to rotate with it and having their adjacent faces beveled from their centers outwardly and away from each other, means for jointly moving the disks toward the sprocket wheel and manually operated means for forcing the chain between the disks and into engagement with the sprocket wheel.

46. The combination of two rotatable disks with their adjacent faces inclined from their axes outwardly and away from each other, a power transmitting chain between the disks and in engagement therewith and an independent automatic governor for each disk to move the disks jointly toward and away from each other.

47 The combination of two rotatable disks with their adjacent faces inclined from their axes outwardly and away from each other, a power transmitting chain between the disks and in engagement therewith and an independent centrifugal governor for each disk to move the disks jointly toward and away from each other.

48. The combination of two disks arranged to rotate in unison with their adjacent faces inclined from their axes outwardly and away from each other, a sprocket wheel centered between the disks and arranged to rotate with them, a sprocket chain extended between the disks and designed to engage the sprocket wheel and means for jointly moving the disks toward and from each other to move the sprocket chain to and from engagement with the sprocket wheel and to maintain it centered over the sprocket wheel when out of engagement with the sprocket wheel.

49. A sprocket wheel, two disks on opposite sides of the sprocket wheel capable of movement to and from the sprocket wheel and arranged to rotate in unison with it having their adjacent faces inclined from their axes outwardly and away from each other, a sprocket chain between the disks and capable of engaging a sprocket wheel and an independent automatic governor for each disk capable of moving the disks toward and from each other in unison.

50. A sprocket wheel, two disks on opposite sides of the sprocket wheel capable of movement to andfrom the sprocket wheel and arranged to rotate in unison with it having their adjacent faces inclined from their axes outwardly and away from each other, a sprocket chain between the disks and capable of engaging a sprocket wheel and an independent centrifugal governor for each disk capable of moving the disks toward and from each other in unison.

51. The combination of a rotatable shaft, a sprocket wheel thereon, a disk adjacent to one side of the sprocket wheel capable of movement toward and from the sprocket wheel and having its face adjacent to the sprocket wheel inclined from its axis outwardly and away from the sprocket wheel, a second disk on the other side of the sprocket wheel, a sprocket chain between thedisks and capable of engaging the sprocket wheel and a centrifugal governing device connected with the first mentioned disk and designed to move the disk toward the sprocket wheel by centrifugal action.

52. The combination of a rotatable shaft, a sprocket wheel thereon, a disk adjacent to one side of the sprocket wheel capable of movement toward and from the sprocket wheel and having its face adjacent to the sprocket wheel inclined from its axis outwardly and away from the sprocket wheel, a

and capable of engaging the sprocket wheel, a centrifugal governing device connected with the first mentioned disk and designed to move the disk toward the sprocket wheel by centrifugal action and a spring acting in opposition to the governor.

53. The combination of a rotatable shaft, a sprocket wheel fixed thereto, a disk slidingly mounted on the shaft and having an inclined face adjacent to the sprocket wheel, a frame fixed to the shaft adjacent to the disk, a centrifugal governing device carried by the frame and acting upon the disk to move it toward the sprocket wheel, a spring acting in opposition to the governing device, a disk mounted on the shaft on the opposite side of said sprocket wheel and a sprocket chain passed between the disks and capable of engaging the sprocket wheel.

The combination of a shaft, a disk slidingly mounted on the shaft, a frame fixed to the shaft adjacent to the disk, a weighted lever pivoted between the shaft and disk and formed with a tapered extension designed when the weighted lever is thrown outwardly by centrifugal force to wedge apart the disk and frame, a spring tending to hold the disk and frame toward each other and anti-friction rollers on the disk and frame to engage the tapered. exten sion.

The combination of a shaft, a frame fixed to the shaft, a number of rollers on one face thereof, a disk slidingly mounted on the shaft, pins extending through the disk and frame to cause them to rotate in unison and permitting them to move slidingly toward and from each other, rollers on the face of the disk adjacent to those on the frame, weighted levers fulcrumed to said pins and slidingly mounted thereon, and having wedge-shaped extensions thereon to enter between the pairs of rollers and springs tending to hold the disk and frame toward each other.

56. The combination of a driving means, a rotatable driven means, a flexible power transmitter passed around them, one of said means comprising two adjacent sides positioned to admit the flexible power trans mitter between them, one of said sides adjustable relative to the other, centrifugally actuated means for moving one of said sides relative to the other, and ad ustable spring actuated means acting in opposition to the centrifugally actuated means.

57. The combination of a driving means, a rotatable driven means, a flexible power transmitter passed around them, one of said means comprising two adjacent sides positioned to admit the flexible power transmitter bet-ween them, one of said sides adjustable relative to the other, said sides normally separated far enough to avoid driving engagement with the flexible power transmitter and a centrifugally actuated governing device for moving the movable side into driving engagement with the flexible power transmitter.

58. The combination of a driving means, a rotatable driven means, a flexible power transmitter passed around them, one of said means comprising two adjacent sides positioned to admit the flexible power transmitter between them, one of said sides adjustable relative to the other, said sides normally separated far enough to avoid driving engagement with the flexible power transmitter and a centrifugally actuated governing device for moving the movable side into driving engagement with the flexible power transmitter, and a yielding pressure device tending to move the movable side out of driving engagement with the flexible power transmitter.

59. The combination of a driving means, a rotatable driven means, a flexible power transmitter passed around them, one of said means comprising two adjacent sides positioned to admit the flexible power transmitter between them, the adjacent faces of said sides tapered from a maximum distance from each other near their peripheries, to a minimum distance from each other near their centers, one of said sides adjustable relative to the other, said sides normally separated far enough to avoid driving engagement with the flexible power transmitter and a centrifugally actuated governing device for moving the movable side into driving engagement with the flexible power transmitter.

60. The combination of a driving means, a rotatable driven means, a flexible power transmitter passed around them, one of said means comprising two adjacent sides positioned to admit the flexible power transmitter between them, the adjacent faces of said sides tapered from a maximum distance from each other near their peripheries to a minimum distance from each other near their centers, one of said sides adjustable relative to the other, said sides normally separated far enough to avoid driving engagement with the flexible power transmitter, a centrifugally actuated governing device for moving the movable side into driving engagement with the flexible power transmitter and a yielding pressure device extending to move the movable side out of driving engagement with the flexible power transmitter.

61. The combination of a driving means, a rotatable driven means, a flexible power transmitter passed around them, one of said means comprising two adjacent sides positioned to admit the flexible power -transmitter between them, one of said sides adjustable relative to the other, centrifugally actuated means for moving one of said sides relative to the other, adjustable springactuated means acting in opposition to the centrifugally actuated means, and means for forcing the flexible power transmitter toward the center of said sides.

62; The combination of a driving means, a rotatable driven means, a flexible power transmitter passed around them, one ofsaid means comprising two adjacent sides positioned to admit the flexible power transmitter between them, one of said sides adjustable relative to the other, said sides normally separated far enough to avoid driving engagement with the flexible power transmitter, a centrifugally actuated governing device for moving the movable side into driving engagement with the flexible power transmitter, and means for forcing the flexible power transmitter toward the (ten ter of said sides.

63. The combination of a driving means, a rotatable driven means, a flexible power transmitter passed around them, one of said means comprising two adjacent sides positioned to admit the flexible power transmitter between them, one of said sides and justable relative to the other, said sides normally separated far enough to avoid driving engagement with the flexible power transmitter, a centrifugally actuated governing device for moving the movable side. intodriving engagement with the flexible power transmitter, a yielding pressure device tending to move the movable transmitter and means for forcing the flexible power transmitter toward the center of said sides.

64-. The combination of a driving means, arotatable driven means, a flexible power transmitter passed around them, one of said means comprising two adjacent sides positioned to admit the flexible power transmitter between them, the adjacent faces of said sides tapered from a maximum distance from each other near their peripheries, to a minimum distance from each other near their centers, one of said sides adjustable relative to the other, centrifugally actuated means for moving one of said sides relative to the other, adjustable spring actuated means acting in opposition to the centrifugally actuated means, and means for forcing the flexible power transmitter toward the center of said sides.

65. The combination of a driving means, a rotatable driven means, a flexible power transmitter passed around them, one of said means comprising two adjacent sides positioned to admit the flexible power transmitter between them, the adjacent faces 01':

said sides tapered from a maximum distance from each other near thelr peripherles, to a minlmum distance from each other near their centers, one of said sides adjustable relative to the other, said sides normally separated far enough to avoid driving engagement with the flexible power transmitter, a centrifugally actuated governing device for moving the movable side into driving engagement with the flexible power transmitter and means for forcing the flexible power transmitter toward the center.

66. The combination of a driving means, a rotatable driven means, a flexible power transmitter passed around them, one of said means comprising two adjacent sides positioned to admit the flexible power transmitter between them, the adjacent faces of said sides tapered from a maximum distance from each other near their peripheries, to a minimum distance from each other near their centers, one of said sides adjustable relative to the other, said sides normally separated far enough to avoid driving engagement with the flexible power transmitter, a centrifugally actuated governing device for moving the movable side into driving engagement with the flexible power transmitter, a yielding pressure device tending to move the movable side out of driving engagement with the flexible power transmitter and means for forcing the flexible power transmitter toward the center of said sides.

67. In a driving mechanism, the combination with a shaft having a sprocket wheel thereon, of a pair of friction disks supported on said shaft adjacent the sprocket wheel and movable relatively to and from each other, and a sprocket chain adapted to cooperate with the friction disks or with the sprocket wheel.

68. In a driving mechanism, the combination with a shaft having a sprocket wheel thereon, of a pair of friction disks supported on said shaft adjacent the sprocket wheel and movable relatively to and from each other, a sprocket chain adapted to cooperate either with the friction disks or with the sprocket wheel, and yielding means tending to bring said disks together during operation, said disks having diverging surfaces adjacent the sprocket wheel to carry the chain out of engagement therewith.

Des Moines, Iowa, December 6, 1905.

FRANZ J. WOOD.

Witnesses:

JULIA B. SMUTNEY, J. RALPH ORWIG.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

